3x+15-7x=-7

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Solution for 3x+15-7x=-7 equation: 


Simplifying
3x + 15 + -7x = -7

Reorder the terms:
15 + 3x + -7x = -7

Combine like terms: 3x + -7x = -4x
15 + -4x = -7

Solving
15 + -4x = -7

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-15' to each side of the equation.
15 + -15 + -4x = -7 + -15

Combine like terms: 15 + -15 = 0
0 + -4x = -7 + -15
-4x = -7 + -15

Combine like terms: -7 + -15 = -22
-4x = -22

Divide each side by '-4'.
x = 5.5

Simplifying
x = 5.5

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